Bird flight: Fly with a little flap from your friends

@article{Muijres2014BirdFF,
  title={Bird flight: Fly with a little flap from your friends},
  author={Florian T. Muijres and Michael H. Dickinson},
  journal={Nature},
  year={2014},
  volume={505},
  pages={295-296}
}
In-air measurements of northern bald ibises flying in a V formation show that the birds conform to predictions for saving energy by regulating their relative body position and synchronizing their flapping motion. See Letter p.399 Some bird species have refined their flying skills to the extent that they can fly in near-perfect V, but why they adopt such a tactic has been a matter of conjecture. One suggestion is that by flying in a V the birds are able to minimize energy costs, and now an… 

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